Duskwalker is a common Creature — Human Minion card from Invasion (INV), collector number 104. Current market price: $0.18 (foil $0.55), TCGplayer market prices via Scryfall.
Kicker {3}{B} (You may pay an additional {3}{B} as you cast this spell.) If this creature was kicked, it enters with two +1/+1 counters on it and with fear. (It can't be blocked except by artifact creatures and/or black creatures.)